<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <ul>
            <li v-for="(item,index) in items" :index="item.id">{{item.text}}---{{index}}---{{index}}</li>
        </ul>
    </div>
    <script>
        const vm = new Vue({
            el: '#root',
            data() {
                return {
                    items:[
                        {
                            text:'第一组'
                        },
                        {
                            text:'第二组'
                        },
                        {
                            text:'第三组'
                        }
                    ]
                }
            },
        })
    </script>
</body>
</html>